Magnetic separator.



P. WRIGHT.

MAGNETIC SEFARATOR.

APPLICATION FILED MAY I4. I9I4. 1,177,981 Patented Apr. 4, 1916.

Qjt MT? gm EARVZH 'lPTL- t'Iil-I-IT, 0F VANUOUVER, BRITISH CClLUTLtIBIfi, (LENADL.

MAGTFIE'IZC SEPARATOZh Application filed clay is,

To all whom it may concern:

Be it known that I, Psnvm i hrone", a citizen of the United States, residing at vancouver, in the county oi Vancouver, Province of British Columbia, and Dominion of Canada; have invented a new and useful Magnetic Separator, of which the fob lowing is a specification.

This invention relates to apparatus for separating magnetic material from sand, gravel, etc, and is an improvement on my application for United States Patent, Serial Number 769,895, filed May 26th, 1913.

The object in general of the invention is to provide apparatus of this character which will be highly efficient in operation and simple in construction.

Other objects will appear from the following description.

Referring to the drawing: Figure l is a plan view of the apparatus. Fig. 2 is a longitudinal section thereof, taken on line ru -#0 of Fig. 1. Fig. 3 is a diagrammatic view of the circuits controlling the electromagnetic material separating element of the apparatus and the switch for said circuits. Fig. 4 is a developed view of a part of the switch for the circuits of the magnetic separating element.

The apparatus is mounted upon a frame 1. In the upper part'lllscid frame is mounted an inclined fiume i-for receiving the material. The flume 2 is formed with a plurality of longitudinal channels 3 in which the material flows. The-bottom of each channel 3 is provided with a slot & which receives a bar 5, the forward end of which is pivoted to the fliune at 6. A shaft 10 is journaled in theframe 1 under the fiume 2 at the rear ends of the slots 4, uponwhich shaft is mounted a plurality of rollers 11 which respectively project into the rear ends of the respective slots 4. The rear end of each of the bars 5 is forked at 12 to receive a cam 15 on shaft 10, by means of which cams the bars 5 are moved up and down on their ivots to agitate the material in the fiume so that the line sand will drop'through the lower rear ends of the slots 4. The slots 4:,

bars 5, and rollers 11 form a screen for screening the material before it leaves the iiume. Located below the Hume 2, and directly under the slots 5 therein, is a chute 18 upon which the fine sand drops from the flame 2 through said slots. Mounted on a shaft 19, journalcd in the frame 1 under Specification of Letters Patent.

Fatented Apr 4, MM 8,

acre Serial. No. Basses.

- the chute 18, is a magnetic drum 20. The

plus water flows from the chute 18. Within the drum 20 are located a plurality ofelectin-magnets 30, arranged in groups a, 5,0

and d and connected through a wiringsys tem 31 to a generator 32. A. copper casing 20 incloscs the magnets 30 in the drum an forms the periphery of the drum.

The energization of the magnets 30 is controlled by a switch 33. The switch 33 comprises a drum 35 mounted on the shaft 19, having a pair of circular contact rings 36 and 36 wiped by brushes 37 connected to" the generator 32 by wires38, and a plurality of contact members 39, 4:0 and 41, connected to the respective groups a b, c and d of the A brush &5 is" magnets 30 by wiring 31. adapted to wipe the contacts 36 and 39, abrush &6 is adapted to wipe contacts 39 and 40, a brush 47 is adapted to wipe contacts 40 and ll, and a brush 48 is adapted to wipe contacts 41 and 36. The contacts 36, 39,40, ll and 36 are of such formation and so timed that said brushes will wipe them only at such times as to short out said magnets when they reach the highest point of the drum 20 and until they reach the lowest point thereof while the drum travels in the direction of the arrow 42. To make'this more clear: When the series of magnets a: are at the left of a vertical line drawn through the center of the drum 20, and the series of magnets 03 approach the highest'le point of the drum, the brushes 4:5 wipe the contacts 36 ant 1.39, and the brushes 48 wipe the contacts 41 end 36 and short out said magnets. are at the left of a vertical line drawn through the center of the drum 20, and the series of magnets c approach the highest point of the drum, the brushes 45 and 46 wipe the contacts 36 and 3.9, and 39 and- 40, respectively, and short out said mag,- nets. When thee-cries of magnets core at the left of a vert1cal line through the center When the series of magnets d of the drum, and the series (3 approach the highest point thereof, the brushes *6 and il wipe the contacts 39 and l and the contacts 4.0 and i1, respectively, and short out saitl magnets. When the series of magnets I) arrest the left of a vertical line through the center oi? the drum, and the series a of said magnets approach the highest point of said drum, the brushes 1? wipe the contacts it; and 41, and the brush l8 wipes the contacts 41 and 36 and short out said magnets. The energization of the magnets is then repeated in the above described order, which constantly lteeps the periphery of the drum to the right of a vertical line through the center of the drum energized, so that the magnetic materials are attracted to the drum and. carried to the highest point thereof, and the periphery of the drum to the left of said line .lll1'i1'glZ8(l. As the current passes through sairl magnets, their heads 59 are energized, which attracts the niagne ic material a ainst the (lruin casing 20, so that saitl mate Ml is conveyed by the rotation of the drum from the lower end of chute to the highest point of the. drum, where the material is delivered to a brush :31 mounted upon shaft i, which brush strips magnetic n'iaterial from the ilr'um anti delivers into a launtlcr "Z. From the launder the magnetic material is rl'e'ireretl into a elassi- The classifier 05 comprises a pair of vertical parallel pipes 56 and 57 which coinn'iunicate WifiliEfiC'll other at 69. The lower encl of pipe 57 communicates with a. pipe (31, whioh communicates at one end with a water tank (35, and is connected at its other encl by a flexible elbow 61' with an outlet 66. The upper end of pipe 537 communicates with a trough. 37. A pipe (38 leads fronfthe'tanlt and pplies water betwee the drum 26 and brush 51 to assist the brush in removing the material from the drum. A fiunie '70 located below the (lruni 20 upon which the nonmagnetic material is delivered from chute 21 and the surplus water is delivered from the channel as. Said thu'ne is provided r-"th mercury trays '11, holding mercury and r11. es 72, which collect'anel holcl the gohl. platinum, and heavy rnetals while the sand is washed over the lower end of the flame. A rater wheel 75, mounted on shaft T6 jour nalezl in the frame 1, is located bel the lower end of the llume. which, receives the g avel, coarse sand, and excess water from the lower end of the Home and is rotated thereby. A splash board 77 receives the gravel, coarse sand and from the wheel 7:"; and. protects the ri s therefrom.

The objectof the rush the power to ru t magnetic llflliil 20 is driven by through the medium of pinion shaft 4'6, inion 81 on stud. 82 on the w h ee 1, Wliich pinion meshes with pinion 80., pulley 83 rotatable with pinion 81, pulley 84: on drum shaft 19 and belt 85 which travels over saicl pulleys. From the drum the power from the water wheel 75 is transmitted to the brush 5i. to rotate" the brush, through the n'ierliiun of pulley 86 on drum shaft 19, pulley 8? on the brush shaft 51 and. belt 89 which passes over said pulleys. Power from the wheel 75 is also transmitted to the enat't to rotate said shaft. through the medium of pulley 90 on rlruni shaft 19, pulley 91 on shaft 10, and belt 92 which passes over saicl pulleys. Although I have herein shown the apparatus as driven by the water wheel 75., other power may be eniployecl if rlesirecl. i

The. operation is as follows: The material to be separated is first placed upon the upper end of the fluine 2 and washed clown the thune by water supplied thereto in any (lesirable manner. As the material passes over the bars 5' and is agitated by the movement of said bars caused by crime anol by the rollers 11 the line sancl and associated metals (lrop through the lower ends of the slots onto the chute 18 and run down saicl chute. and. oil the lower entl thereof, while the. surplus water flows in the channel 26 and onto the flame T0. As the sand and associated m tals run off said chute, tlie nonmagnetic inateri .l runs clown the chute 21 onto the finale YO. while the magnetic. material attracted to the lower portion of the periphery of the drum by the magnetism of the magnets anti carriesl around with the (lilllll to the brush 5i. which strips the magnetic material from the tlrum and (lelivers it into the launder From the launder the. magnetic material flows into the pipe 5%") and then into the pipe 5'? of the classifier where it meets an upflow of water flowing; from. the tank through pipe 61. The force of the water is such that it carries the ligl? material, for example, magnetite, a. while the heavier material, for example, fee 0 nickel sinks through the upllow and I the outlet to any su' able {not shown}. The foree of the upiiow may be varied in any suitable way, a for example, by bending the flexible elbow ill and tilting the outlet pipe The non-magnetic material when delivered onto the flame Wis washed (lown sairl tiume by the water from the channel 26, over the mer eury trays 71 and rililes 72, which collect ancl hold the gold, platimun, and heavy metals while the sand. washed off the lower entlv oi the flame.

l that l is:

l. inagnetio ore separator a fluine.

into which the ore. rst and washed. down. means tor r charging f l T0111 seal name, means for s pa'aril and delivers it into the trough 5'2,

fine sand from the surplus water therein, a magnetic separating device for collecting the magnetic material from said fine sand when said surplus water is separated therefrom, means for discharging said magnetic material from said separating device, a second flume, means for delivering the non magnetic material upon said second flume, and means for delivering said surplus water to said second flume to wash the non-magnetic material down said flume.

2. In a magnetic ore separator, a flume into which the ore is first placed and Washed down, means for discharging the fine sand from said flume, a magnetic separating device, said separating device being adapted to collect the magnetic materials from said fine sand, a fimne into which the non-magnetic material is delivered, means for washing the non-magnetic material down said flume, mercury trays and riflies in said flume for collecting the non-magnetic metals, a power wheel operated by the excess water and ore residue flowing from said first .flume, said power wheel being adapted to drive said separating device, and a splash board covering said rifiles upon which the Water and ore residue is delivered from said power wheel.

3. In an ore separator, a rotatably mounted magnetic separating device comprising magnets, a chute for receiving finely divided ore together with water at a point adjacent to said magnetic separating dev,ice,' a chute extending adjacent to the delivering end of the aforesaid chute, and spacedtherefrom to permit finely divided ore to pass between said chutes and from the first chute onto the second named chute, said second named chute being located within the field of influence of the magnetic separating device, and

a plate extending adjacent to said second thereof, a second chute ifrom'the first chute and named chute and spaced therefrom to form a channel between said plate and said second named chute for receiving water from said first named chute.

4. In an ore separator, a magnetic separating device comprising a rotatably mounted drum provided with magnet-s, a chute extending over said drum and partly around the same for delivering finely divided ore together with water at a point adjacent to said drum, a chute extending partly around the lower portion of said drum and having its upper end adjacent to the lower end of the first named chute and spaced outwardly therefrom to permit finely divided ore to pass from said first named chute onto said second named chute and to be guided by said second named chute in proximity to the drum, said second named chute being located in the field of influence of the Inagnetiaseparating device sufficiently close to the lower edge of said first named chute to permit excess water to pass to the outside of said second named chute.

5. In an ore separator a rotary magnetic Y eparating device, a chute extending partly around the lower portion of the device and being within the field of magnetic influence being substantially concentric therewith, and means to deliver finely divided ore together with Water upon the upper .end of the first chute, said second chute adapted to receive the water from said means.

In testimony whereof, I have hereunto set my hand at Vancouver, B. 0., this 30th day of April, 1914.

PARVIN WRIGHT. In presence of SAM. A. Moons, E. R. BENNETT.

spaced outwardly 

